On $L$-fuzzy ideals in semirings. I
Czechoslovak Mathematical Journal, Tome 48 (1998) no. 4, pp. 669-675.

Voir la notice de l'article dans Czech Digital Mathematics Library

In this paper we extend the concept of an $L$-fuzzy (characteristic) left (resp. right) ideal of a ring to a semiring $R$, and we show that each level left (resp. right) ideal of an $L$-fuzzy left (resp. right) ideal $\mu $ of $R$ is characteristic iff $\mu $ is $L$-fuzzy characteristic.
Classification : 03E72, 04A72, 16D25, 16Y60
Mots-clés : semiring; $L$-fuzzy (characteristic) ideal; level ideal 
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     title = {On $L$-fuzzy ideals in semirings. {I}},
     journal = {Czechoslovak Mathematical Journal},
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Jun, Young Bae; Neggers, J.; Kim, Hee Sik. On $L$-fuzzy ideals in semirings. I. Czechoslovak Mathematical Journal, Tome 48 (1998) no. 4, pp. 669-675. https://geodesic-test.mathdoc.fr/item/CMJ_1998__48_4_a4/